Elevator



Oct. 9, 1928. Re. 17,097

M. BARUCH ELEVATOR Original Filed Oct. 10. 1921 2 Sheets-Sheet 1INVENTOR l7i/fon Baruch AfTORNEY cm. 9,1928; Re. 11,091

M. BARUCH v ELEVATOR Original Filed Oct. 10. 1921 2 Sheets-Sheet 2 Fly6' INVENTOR M/Vfon Baruch ATTORNEY v elevators operating in uil ings,although, of

Reissued a. 9,1928.

1 UNITED STA Tss PATENT OFFICE.

11112130! annex, or "BEVERLY HILLS, canr'aonma, assfenoa r0 was'rmenousnELECTRIC mnmuracrvnmo oomramr, a CORPORATION or rnnnsrnvmm.

- ELEVATOR.

Original No. 1,580,883, dated April 13, 1926; serial 110.506369, file dbutcher 10, 1921. Application for reissueflled {Tune 23, 1928. SerialNo. 287,827.

My invention relates to elevators and it may be advantageousl ap lied topassenger course, being equally applicable to freight elevators andhoists of various descriptions.

which is so constructed t at it will automatitor will be described. 'Theprincipalbbject of the invention is to rovide an elevator cally assume aposition in which the floor of the car is level with the floor of thebuilding in the event that the car is stopped with the floor of-the carout oflevel with the fiooro'f the building, provided-such stoppingoccurs within a certain distance of the level position, this distanceoneither side of the level position being hereinafter designated as theobject .quite indepen 25 providemeans by which the above objects inay beattained without the use of switches or cams carried by thecarorsituated in the hatchway-and with a high degree of accuracy.

- A'still'jfurther object of the invention is to.

provide means whereby the leveling mechanism is heldout of enga ement atall times 1 except at the time or just efore the time that the carcomesto rest. I

f A. still further object of the invention is to provide meansioraccomplishing the above objects which will be extremely flexible ininstallation so that these means can be applied to existing elevators orcan be readily modified tosuit almost any conditionmet with in practice.I

Further objects and advantages will be made evident hereinafter.

Referring, to the drawings which are for illustrative purposes only,

Figure 1 isa diagram showing anelevator car to which my leveling systemhas been Fig.2 is an elevation on an enlarged scale showing the levelingfingers and a leveling roller; l

' Fig. 3 is a front elevation showing the leveling roller in itssupport;

Fig. 4 is partial section on an enlarged sciaig onla plane representedby the line H 0 1g.

Fig. 5 is a sectlon on a plane represented by the line 55of Fig. 2; andIn the following specification the application of my invention to apassenger eleva- 1 Fig. 6 is a dia ram of connection. In the form 0 theinvention shown I provide a car-1'1 which is suspended by cables 10which pass up to suitable counter-weights and hoisting mechanism, notshown. Secured-to the top -of the car 11 is a flexible tape 12 whichpasses, over sheaves 13,14, 15 and 16,

being then attached to the bottom ofthe car. The member 12 is preferablyformed of thin steel although any other material having ,suificientstrength, flexibility and permanence may be used. The car 11 passes upand down in ahatchway serving floors 17, 18 and 19.

Secured. on the flexible member 12 are a series of projections 20, oneof these projections being provided for. each of the floors 17,

18 and 19. The projections 20 consist of a member 21 on what may betermed the back of the member 12 and a member 22 on the face ofthe'member 12, these members being.

secured together through holes for slots in the member 12 by meansof'bolts' 23, Carried on a pin 25 in each ofthe members 22 is a roller'26. Each of the sheaves 13, 14, 15 and 16 has with a groove 27 wallowthe'members 21 topass readily therearotifi'd.

Situated at some convenient point are a pair of leveling fingers 3'1 and32. Rollers 3Q turning about stationary pinsare located opposit'ethejfingem 31 and 32 for the pur ose of holding the rollers 26 incontact with t ese fingers "as shown in Fig. 2.. The fingers 31 and 32are carried on pivots 33 and are pro' vided with projections 35 betweenwhich a tension spring-34 is stretched, this spring 1 tending to pullthe extensions 35 against stops 36., A contact 37 is carried by butinsulated from each of the members 35, this contact touching and makingelectrical connection with a contact 39 whenever the mem-' position ofthe building structure or mechanism. A bellcrank 43 forming anexztension on an arm 41' pivoted at 42 to some stationary of the arm 41is connected to the plunger 44 ofamagnet having a winding 45.

The method of connection can best be understood from Fig. 6 in which isthe armature of the elevator motor which is mechanically connected toraiseand lower the car means of suitable mechanism not shown'ilth roughthe cables 10. The armature 50 is magnetically linked with a field51excited from a source not shown. The armature leads 52and 53 of themotor armature 50. are connected. to wires 54 and 55. The

, wire 54 is connected tocontacts 56 and 57 and the wire 55 is connectedto contacts 58 and 59.. The contacts 56 and 58 form part of anupcontactorfio having a coil 61, the contactorfio being so constructedthat the contacts-56 and 58' are .closedwhenever the tacts 58 and 57areconnected wire 65. series with the-wire 1s a winding 61 ;is,energized. In=the same way the contacts57'and 59 form part of a downcontactor 62 having-alwindin 63. .The conto a negative resistance '66which may bu cut in and ouffof circuitby means of contactors 67 whichmay be either automatically energized or which a maybe controlled; by a.car switch 70 ingac means, not shown.

,cordance with the standard pi'ncticeg' by The .motor {50'orfsomeportion of themech- 1 driven by theniotor is provided with a brakeTdperated by magnet 71. The contacts 37 and-.39 operated by the finger31 are for convenience designated as the up contact-72 and the similarfingers operated by the arm 32. are'de'signated as the down contact 7 3.The car'switch 7O is provided with an operat; inghandle 74 which mayoperate an arm 75 making contact with .the segments 76, 77, 7 8,

79, and 81. The operating handle 74 may I be aloattached to other formsof control switch, for example, as push buttons such as is usedinantomatic elevators. The con-- tact 81 is connected through a wirewith a wire 91 connecting the winding 61 to the The other terminal ofthe windin 61 is connected to a common wire 92 which is connccted to oneterminal of the wlnding 63,

the wire 92 being connected to the brake magnet 71 which is connectedthrough a wire 93 with alnegative wire 94. This negative wire-94 is'alsoconnected to one terminal of the magnet 45, the other terminal of whichis eonnected through a wire'96with the seg ments77 and 8Q. A positivewire 97 is con-' nectedto the segments 78' and-7 9 and toione side'ofthe contact 72 and- 73 by r'neansof wire 98.- Thefother side of thewinding 63 is con? nected through awire 99 with one sideof the contact73 and through a wire 100 with the segment 76. j

The method ofoperation is as follows: In the dia am of Fig. 6, theoperating handle 74is s own in its oil. or neutral position, this beingthe position into which the handle is thrown when it is desired to stopthe car. In the event that it is desired to start the car u wardl thehandle 74 is rotated in a cloc wise irection, first connecting thecontacts 77 and 7 S'together which connects the wire 96with the positiveside of the circuit.- Thisenergizes the magnet 45 which pulls upwardl onthe core 44 and draws the box 40 an the fingers 31 and 32 out of thepath of the rollers 26. This is done for the purpose of preventin theroll ers 26 from striking against the hngers 31 and 32 while moving at ahigh speed and thus causing unduewear to the fingers and what is moreimportant a very disagreeable clicking noise, If the handle 74 isrotated further-in a clockwise direction, the contact 76 isalsoconnected to" the contact 78 thus connecting the wire 100 with thepositive side of the circuit, This energizes the down contactor 63 whichcloses the contacts 57 and 59 the car. Themoving of the handle 74 to thein accordance with standard Theneutral position opens the circuit ofthecontact 77 and :deenergizes the magnet 45 thus allowing the, fingers 31and 32 to drop into the position shown in Fig. 2 in which position theyare engaged by one of the rollers 26. In the event that the car stopswith the roller 26 in the position shown in Fig. 2 neither of thefingers 31 or 32 are moved away from the'stops 36and neither thecontacts 72 or 73 are closed except 'perhapsmomentarily as the car comestores't. jThis central position, of the rollers 26 corresponds to anaccurate landing at the floor-18.

In the event, however, that the car is above or below the floor, theroller 26 will be above or below the position shown in Fig. 2 and eitherthe finger 31 or the finger 32 will be depressed,thus closing either thecontact 72 or the contact 73. If the contact 72 is closed.

the winding 61 is energized which closes the the elevator moves theroller 26 downwardly and as soon as the roller reaches the"po-" sitionshownin Fig. 2, the contacts 72 are the elevator is too high, thefingers 32 are energized and the contact 73 is closed,.thus

contacts 56 and-58 and causes theelevator to move upwardly. This upwardmovement of opened and the elevator stops. Conversely if V operating thedown contactor 62 and connecting the motor into circuit in such a manneras to move the elevator down until the central or level position isreached.

It is to be understood that there is the projections 20 carrying a eachof the floors which it is desired to serve and these projections are sospaced on the member 12 thatan accurate leveling takes place by means ofthe mechanism shown. While I have the fingers 31 and 32 and theirattached parts near the bottom of the hatchway, it is evident that thisis not at all necessar as they will operate in any position which can bereached by the member 12. The member 12 may, for example, be run overone of additional sheaves to points quite distant from the hatchway inwhich the car travels.

I claim as my invention:

n 1. In an electric elevator, the combination of: acar ;an electricmotor for actuating said car; a controller connected to operate saidmotor in a forward or in a reverse an operating handle carried in saidcar by which an operator can set said controller to operate said motorin either direction; a pair of fingers; a flexible member attached tothe car and so constituted as to actuate oneof said fingers when the carstops a a predetermined point and to actuate the other finger'when thecar stops a little below a predetermined point; and means independentofsaid operating handle by which the actuation of one of said fingerscauses said controller to assume a posi car down and the actuation ofthe other finger causes said controller to assume a position to movesaid car up.

2. In an electric elevator, the combination of a car; an electric motorfor actuating said car; a controller connected to operate said motor n aforward or in a reverse direction; an o crating handle carried in saidcar by whic an operator can set said controller to operate said motortineither direction; a-pair o fingers, a flexible member attached to saidcar; a series of projections on said flexible member each so constitutedand placed as to actuate 'one of said fingers. when the car stops alittle above a predetermined point and to actuate the other finger whenthe car stops a little below a predetermined point; and meansindependentv of said operating handle by which the actuation of one ofsaid fingers causes said controller to assume a position to move the cardown and the actuation,

of the other finger causes said controller to assume a position to movesaid car up..

- 3. In an electric elevator, the combination a of: a car; an electricmotor for actuating said car; a controller connected'to operate saidmotor in a vforward or in a reverse direction; an o erating handlecarried in said, car by whic an operator can set said controller toopesate said motor ineithe'r direction a pair roller 26 for 1 direction;

little above.

of fingers; a strip of flexible flat material ate tached to said car andpassin in proximity to said fingers; a series of pro ections on saidflexible strip each as to actuate one of said fingers when the car stopsa little above a predetermined point and to actuate the otherffinger.when the car sto s a little below a predetermined point; an meansindependent. of said operating handle by which the actuation of one ofsaid fingers causes said controller to assume a position to move the cardown and the actuation of the other finger causes said controller toassume a position to move said car up.

'4. In an electric elevator, of: a car ;an electric motor foractuating'said car; a controller connected to operate said motor in aforward or in a reverse direction; an operating handle carried in saidcar by which an operator can set said controller to operate said motorin either direction; a pair of fingers; a flexible member attached tothe car and so constituted as to actuate one of said fingers when thecar stops a little above a predetermined point andv to actuate the otherfinger when the car stops a little below a predetermined point; andmeans by which v finger .sets the controller in the up position and theactuation of thethe actuation of one other finger sets the controllerin' the down position. a

5. In an electric elevator, the combination of: a car; an electric motorfor actuating said .car; a controller connected to operate said tion tomove the" motor in a forward or'in a reverse direction; an operatinghandle carried in said car by which an operator can set said controllerto operate said motor in either direction; a pair of fingers; a flexiblemember'attached to said car; a series of projections on said flexiblemember each so constituted and placed as to actuate one of said fingerswhen the car stops a little above a predetermined point and to actuatethe other finger when the car stops a little below a predeterminedpoint: and

of z a car; an electric motor for actuating said so constituted andplaced the combination means by which the actuationof one finger car; acontroller connected to operate said motor in a forward or in a reversedirection;

an operating handle carried in said. car bvwhich an operator can setsaid controller to operate said motor in either direction; a pair offingers; a strip of flexible fiat material attached to said'car andpassing in proximity to said fingers; a series of pro ections on saidflexible member each so constituted and placed as to actuate one ot-saidfingers when the car stops a little above a predetermined point and toactuate the other finger when the car stops a litt and means b'y'whichthe actuation of one le below a predetermined point car; a series fin ersets the controller in the up position and the actuation -of the otherfinger sets the controller in the down position.

7. In an electric elevator, the combination of: a car; an electric motorfor actuating said I other finger when the car stops a little below 1 la:predetermined point;

means for rendering rs inoperative at all times except -when saidoperating handle is in the off position; and means independent of saidoper- 2 ating handle by which the actuation of one of said fingerscauses said controller to assume a position to movelthe cardown and theactu- Sal.

ation of the other fingercanses the controller to assume a 'tionto movesaid car up.

8. In an e ectric elevator, the combinationf v of: acar; an electricmotor for actuating said fingers; a flexible member attached to said ofprojections on said flexible member each said fingers when .the carstops a little above a pre a little below a predetermined point; zneansfor rendering said fingers inoperative at all 40. times except when saidoperating'handle is in the off-position; and means. independent of saidoperating handle to assume a position said motor in a forward 0min areverse. direction an operating handlecarried in said whichan operatorcan set said controller to operate said motor in either'direction;

'tached t said car and passing in proximity tosaid ngers; a series ofprojections on said 1 flexible stripeach so constituted andplaced' as toactuate one of said fingers when the car i I a stops :1 little above apredetermined point and to actuate the other finger when the car stops"f a .little below a predetermined point; and means independent of bywhich the actuation causes said controller to assume aposition to tachedto the car I hic an operator can set saidcontnollerltoopbrate said motorin either direction; a pair so constituted and placed aslto 3 actuateone of determined point and to actuate the other finger when the carstops'f I times. except when said operating handle is said operatinghandle by w by which the actuation of one of said fingers causes saidcon-- the-actuation of the other finger for actuating said l car'b'y apair-- of fingers; a strip of flexible flat material at flexible stripeach so 7 'to actuate one of said fingers 'when the car said operatinghandle of one of said fingers move the car down and the actuation oftheother finger causes said controller to assume -a position to move saidcar up.

'10. In an electric elevator, the combination of: a car; an electricmotor for actuating said car; a controller connected to operate I saidmotor in a forward or in a reverse direction; an operating handlecarried in said car by which an operator can set said controller tooperate said motor in either direction; a pair of fingers; a flexiblemember atand so constituted as to actuate one of said fingers when thecar stops a little above a predetermined point and to actuate the otherfinger when the. car stops a little below a predetermined point; meansfor rendering said fingers inoperative at all times except when saidoperating handle is in'the off position; and means by which theactuation of one finger sets the controller in the up positionandtheactuation of the other finger sets the controller in the down'position. 11.. In an electric elevator, the combination Kof: a car; anelectric motor for actuating said fear; a controller connected "tooperate said motor in a forward or in a reverse direction;

"an operating handle carried in said car by.

i twln' y {operate said-motor in either direction; a pair '1 of fingers;a flexible member attached tosaid c r .car;"a series of projections onsaid flexible ch an operator can set said controller to member each alittle above a predetermined point and to actuate the other finger whenthe car stops a little below a predetermined point; means in the offposition; and means independent of ich the actuation one of said"fingers causes said controller to assume a position to move the cardownand the'actuation of 'the other finger causes said controller toassume a position to move 12. In an electric elevator, the combinationcar; a controller connected to operate said motor in a forward or in areverse direction an operating handle carried in said car by steps alittle above a predetermined point and of: a car; an electric motor foractuating said er direction a pair o fingers; a st rip .of flexible flatmaterial troller to assume a position to move the car down and theactuation of the-other finger causes said controller to assume aposition to move said car up. I, f,

13. In an electric elevator, the combination of: a car; an electricmotor for actuating said car; a controller connected to operate saidmotorin a forward or in a reverse direction; an operating handle carriedsaid 'car by which an operato'rcan set said controller to operate saidmotor in either direction; a pair of fingers; a flexible member attachedto said car; a series of projections on said flexible member each soconstituted and placed as to actuate one of said fingers when the carstops a little above a predetermined point and to actuate the otherfinger when the car stops a little below a predetermined point; a magnetcontrolled by the movement of the operating handle fordrawing saidfingers out of the path of said projections at all times except whensaid operating handle is in the OE or neutral position and means saidmotor in a forward or in a reverse direction; an operating handlecarried in said car by which an operator can set said controller tooperate said motor-in either direction; a pair of fin ers; a strip offlexible fiat material attache to said car and passing in proximitytosaid fingers; a series of projectionson said flexible strip eachls oconstituted and placed as to actuate one of said fingers when the carstops a little above a predetermined point and to actuate the otherfinger when the car stops a little below a predetermined point; a magnetoontrolled by'themovement ofthe operating handle for drawing saidfingers out of the path of said projectionsvat all times except whensaid operating handle is in the oil or neutral position; and meansindependent of I said operating handle by which the actuation 01 oneof'said fingers causes said con troller toassume a position to move thecar down and the actuation of the other finger causes said controller toassume a position to move said car up.

' 15. The combination with an elevator car and an electric motor foractuating the car,

of manually operable means for controlling the motor, a flexible memberattachedrto said car, and means comprising an electroresponsiveswitching device controlled by said flexible member for controlling saidm0- tor when said manual means is inoperative.

17. The combination with an elevator car and an electric motor foractuating the car, of manually operable means for controlling the motor,a flexible member attached to said car, a plurality of adjustablymounted projections carried by said member, and switchingmeanscontrolled by said projections for efiecting automatic operations ofsaid motor .to actuate said car to predeternn'ned points of car travel.

18. The combination with an elevator car and an electric motor foractuating the car, of manually operable means for controllin the motor,a flexible member attached to sai car, a plurality of adjustabl mountedprojectionsca'rried b said mem r, and switch- I mg means contro led bysaid projections for effecting automatic operations of said motor toactuate said car substantially to a selected level independently of saidmanually operable means.

19. The combination with an elevator car,

and an electric motor for actuating the car,

of manually operable means for controlling controlled by saidmem'bers orcontrolling said motor when said manual means is inoperative.

'20. Thecombinationwith an elevator car and an electric motor foractuating the car, of manually o erable means for controlling the motor,a p urality of cam members actuated in accordance with the car movement,means for cooperating with said members to control said motor, andmeans-for rendering said cooperating means inefiective.

21. In a control system for an elevator car operablepast a floor, meansfor stopping said car accurately level with'said floor comprising a cammember movable in correspondence with movements of said car through adistance substantially e ual to the distance traversed by said car anmeans cooperating with said cam mem er at a-point thereon corres ondingto the position of said car at said oor level for controlling thestopping of said car.

22. Ina control system for an elevator'car car movement, and electro-resonsive means operable in a 'hatchwaypast a plurality of floors, meansfor stopping said car accurately atssaid floors comprising a cam memberhaving a cam portion for each of said. floors and operable incorrespondence wltlfmoveher to stop said car at any of said floors whenthe corresponding cam portion engages said control means.

23. In a control system for an elevator car operable in a hatchway pasta plurality of floors, means for stopping said car accurately at saidfloors comprislng acam member having a cam portion for each of saidfloors and operable in corres ondence with movements of said car througa distance substantially equal to the distance traversed by said car in.said hatchwa'y, and control means for said car cooperating with said cammember to stop said car at any of said floors when the corresponding camportion engages said control means and means 0 rable at will forpreventing engagement 0 said control means and any of said cam portions.

24. In a control system for an elevator car operable in a hatchway pasta plurality of floors, means for stopping said car accurately at saidfloors comprising a cam member having a cam portion for each of saidfloors and operable in correspondence with movements of said car througha distance substantially equal to the distance traversed by said car insaid hatchway, and control means for said car cooperating with said cammember to stop said car at any of said floors when the corresponding camportion engages said control means and means operable when it is desiredto pass a floor for removing said control meansfrom engagement with saidcorresponding cam portion. v

25. In a control system for an elevator car operable in a hatchway pasta plurality of floors, means for starting said car, means for stoppingsaid car accurately at said floors comprising, a cam member having a campor-v tion for each of said floors and operable in correspondence withmovements of said car through a distance substantially equal to thedistance traversed by said car in said hatchway and control means forsaid car cooperating with said cam member tostop said car at any of saidfloors when the corresponding cam portion engages said control means,and means operable by actuation of said car startin means for removingsaid control means om engagement with said cam portions.

26'. In a control system for an elevator car operable in a hatchway pasta plurality of floors, means manually operable from a car stoppingposition to a car. running position, car controlling means operable bymovements of said manually operable means to car starting positionforstarting said car, means for actuatln said controlling means to stopsaid ca'r leve with said floor including, a cam member movable incorrespondence with movements of said car through a distancesubstantially equal to the distance traversed by said car andhaving acam portion thereon corresponding to each floor and control means foractuating said car controlling means engageable by the corresponding camoperable in a hatchway past a plurality of floors, means manuallyoperable from a car stopping position to a car running position,

car controlling means operable by movements of said manually operablemeans to car starting position for starting said car, means foractuating said controlling means to stop said car level with said floorincluding, a cam member movable in correspondence with movements or saidcar through a distance substantially equal to the distance traversed bysaid car, and having a cam portion thereon corresponding to each floorand control means for actuating said car controlling means engageable bythe corresponding cam portion when said car is adjacent theassociatedvfloor and magnetic means operable'when said manuallycontrolled means is in car running position for preventing engagement ofsaid control means and said cam portions.

28. In atcontrol system for an elevator car operable in a hatchway pasta plurality of floors, means manually operable from a car stoppingposition to a car running position, car controlling means 0 erable bymovements of saidmanua ly opera le means to car starting positionforstarting said car, means for actuating said controlling means to stopsaid car level with said floor including, a cam member movable incorrespondence with movements of said car through a distancesubstantially equal to the distance traversed by'said car and having acam portion thereon corresponding to each floor and control means foractuating saidcar controlling trol means into a position to be enga edby the cam portions associated with said oor.

29. In a control system for an elevator car operable in a hatchwayv pasta plurality of floors, means manually operable from a car stoppingposition to a car running position, car controlling means operable bymovements of said manually operable means to car starting position forstarting said car, means for actuating saidcontrolling means to stopsaid car level with said floor including, a cam member movable, incorrespondence with movements of said car through a distancesubstantially equal to the distance traversed by said car and having acam portion thereon of said manually operable means to car startcorresponding to each floor and control means for actuating said carcontrolling means engageableby the corresponding cam portion when saidcar is adjacent the associated floor, magnetic means for moving saidcontrol means to a position out of possible engagement with said camportions and means operable in response to conditioning the car to stopat any of said floors for rendering said magnetic means inefiective.

30, In a control system for an elevator car operable in a hatchway pasta plurality of fl00rs, means manually operable from a car stoppingposition to a car running position, car controlling means operable bymovements ing position for starting said car, means for actuating saidcontrolling means to stop said able by movement of said manuallyoperable means to a car stopping position for moving 'said control meansinto a position to be en gaged by the cam portions corresponding to thenext'floor approached by said car.

- MILTON BARUCH.

